System or retaining heat and of ventilation.



no. se5,35|. 'Patented 1an. l, 190|.

\ c. H. SMITH.

' SYSTEM 0F RETAINING HEAT AND 0F VENTILTIN. 4 (Aplimion mea um. 5, 1897.; (No Model.) l 2 Sheets-Sheet I,

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c. H. SMITH.

SYSTEM 0F RETINING HEAT AND 0F VENTILATION.

- (Application med Mar. 5, 1897.) (No Model.) A 2 Shania-Sheet .2.

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ATENT CHARLES HOLDRIDGE SMITH,.OF COUNCIL BLUFFS, IOWA, ASSIGNOR OF ONE-THIRD TO HARRY L. SMITH, OF SAME PLACE.

SYSTEM OF RETAINING HEAT AND OF VENTILATION.

SPECIFICATION forming part of Letters Patent N o. 665,351, dated January 1, 1901.

Application filed March 5, 1897. Serial No. 626 ,158. tNo model.)

T0 all whom it may concern.'

Be it known that I, CHARLES HOLDRIDGE SMITH, of Council Bluffs, Pottawattamie county, State of Iowa, have invented a certain new and Improved System of Retaining Heat and of Ventilation, of which the following is a specification.

This invention relates to heating apparatus, and an embodiment thereof will be hereinafter described and the invention definitely pointed out in the claims.

At the present time and under the present known systems of heating it is a well-known and recognized fact that a very large portion of the heat is carried od and escapes through the chimney or liue. My invention is designed to overcome this objection, and I have discovered that this large per cent. of heat can be controlled, so as to preventits escape, and utilized, and, further, by the application of the invention it has been found by actual and numerous tests and uses that not only will the invention or discovery prevent the escape of heat or heated gases to a great degree, but will also largely prevent unnecessary and useless consumption of fuel. I have also discovered in connection with my invention that the carbonaceous products, usually in the form of smoke, cinders, and soot, whichA heretofore have been carried olf and wasted are by my apparatus wholly or substantially wholly consumed and as such are utilized as fuel for the production of additional heat.

My invention and discovery is, as far as I know, a radical departure from any system, method, and means heretofore suggested, and while I have shown an embodiment of the same in the accompanying drawings I desire it understood that the invention is in no sense limited to the construction shown.

Ihave discovered that by employing an auxiliary Hue of a capacity substantially that of the chimney or main flue and that by so positioning and arranging a portion of the auxiliary due that either a horizontal current,or a current not directed upward, of air will pass through the flue and be deflected into the chimney and by conducting the products of combustion from the heat-generator and into the auxiliary fiue at ornear the horizontal portion in a manner hereinafter described and permitting at the same time a free passage of air through the auxiliary flue the above-mentioned desirable results are attained.

In the drawings, Figure l is a perspective view of an apparatus embodying my invention. Fig. 2 is a perspective of a slightlymodified construction.

Referring to the drawings, and particularly to Fig. l, 1 indicates a heat-generator in the form of an ordinary or any preferred form of stove. 2 indicates a chimney or main iiue, which may be of the usual or any approved construction and size and, as shown, is built in thev wall of the apartment or building in which the stove is located, though this is not essential, and the flue may be in the form of an exposed pipe. Leading to the chimney or main flue 2 is an auxiliary cold-air flue 3, which to produce best results is of the same or substantially the same capacity as the chimney or `ue 2. The coldair flue is provided with a substantially horizontal portion or course (indicated at 7) and with a substantially horizontal additional course or bend 8, connecting the portion 7 directly with the mairl flue or chimney 2. The flue 3 has an open intake end located at any point where a supply of cold or cool air is obtainable and, as shown, is located nearl the floor 4 of the apartment or building in which the generator is located. l2 is a damper for closing the intake of the flue 3 when the re is to be startn ed in the generator. From the generator or heater leads a pipe or due 6, which, as shown, connects with the portion or course 7 of the flue 3 opposite the course or bend 8, the pipe 6 serving as the conductor for the heated products or products of combustion from the generator to the due portion 7. 5 indicates an extension of the flue 3 for the purpose of obtaining the cold-air supply from another point.

In Fig. 2 substantially the same relative arrangement of the chimney, cold-air flue, and heated-products due is shown; but in this construction the generator is shown in the form of a furnace and the air-Hue is represented as provided with a plurality of intake branches, (indicated at 3%) the aggregate capacity of which branches is substantially equal to that of the cold-air flue, which IOO latter, like the corresponding liuc in Fig. l, is substantially of the same capacity as the chimney or main ilue.

From the above-described construction and arrangement I have found by large numbers of actual demonstrations where the apparatus has been in practical use for a considerable period of time, covering in many instances an entire year, that the above-mentioned saving of fuel and heat is accom plished.

The apparatus and invention, as will be readily understood, is in no sense that of the ordinary damper or check-draft which is now widely known and used, and I have found that the best results are obtained when that portion of the air-fine into which the smokeflue discharges is arranged in either a substantially horizontal position or 'a position not extending upward toward the exit, and my experience has shown that a flue extending upward with a single b end into the chimney and into which the smoke-line enters will not accomplish the same results, although I do not wish to be understood as limiting my invention to the particular construction of the elbow portion.

Having thus described myinvention, what I claim as new, and desire to secure by Letters Patent, is

l. In a heating apparatus, the combination with a primary or main flue, of a heater having a smoke-fine, and means for supplying air to the main flue across the exit of the smoke-flue in a substantially horizontal direction and into the main flue in line with the smoke-flue, substantially as described.

2. In a heating apparatus, the combination with a main fine ot' a heater having a smokeiiue and means for conducting a volume of air across the mouth of the smoke-flue in substantially a horizontal direction and deflecting the air at an angle into the main iiue, substantially as described.

3. In a heating apparatus, the combination with a main Hue, ot' a heater,an air-Hue having a substantially horizontal portion the end of which horizontal portion extends atan angle to the main part thereof and enters the main Hue, and a smoke-flue leading from the heater into the horizontal portion of the airue intermediate its ends, substantially as described.

4. In a heating apparatus, the combination with a main flue, of a heater, an air-flue having a substantially horizontal portion one part of which extends at an angle to the main part and enters the main flue, and a smokeiiue leading from the heater into the main part of said horizontal portion of the air-flue opposite the angular part, substantially as described.

5. In a heating apparatus, the combination with a heater, of a main due, an auxiliary ilue having a capacity substantially that of the main ilue, and having a portion extending transverse to and at an angle into the main flue and asmoke-Iine entering the transverse portion of the auxiliary flue, substantially as described.

6. In a heating apparatus, the combination with a main flue, of a heatgenerator,an auxiliary cold-air tlue leading from a point at or near the floor, having a portion arranged substantially horizontal and its end leading at an angle into the main iiue and a smokeflue leading from the heater into the horizontal portion of the auxiliary Iiue opposite the inlet to the main iiue, substantially as described.

7. In a heating apparatus, the combination with a main ilue and a heater, of an auxiliary lue having a capacityv substantially that of the main flue terminating at its intake end at or near the door, and having a transverse portion and an angle portion, and a smokelue leading from the heater into the transverse portion of the auxiliary flue, substantially as described.

8. In a heating apparatus, the combination with a substantially vertical main flue or chimney, of a supplemental air-flue of a capacity substantially that of the main fille or chimney, and having a horizontal portion 7 and a portion 8 at an anglo to the portion 7 and entering the main liuc or chimney, a generator, a pipe G leading from the generator, and entering the portion 7 of the supplemental air-line opposite and in line with the portion 8 of the supplemental air-flue, substantially as described.

In testimony whereof I have hereunto set my hand this 25th day of, February, A. D. 1897.

CHARLES I-IOLDRIDGE SMITH.

In presence of- C. E. I-IAWLEY, M. E. GooLEY.

IOO 

